Honeywell R0512 manual Switch-On Counter, Technical Address, Trend Logging

ATTRIBUTESEXCEL 50/100/500/600/800

whether the off-phase is selected between the single stages, e.g., for ventilators, or whether the next lower stage is selected directly, e.g., for electrical air heaters.

Switching down	Switching down behavior
0	3, OFF, 2, OFF, 1, OFF
1	3, 2, 1

Switch-On Counter

Record switching frequency The attribute "Switch-On Counter" gives information about the switching frequency of digital datapoints. The change of state from 0 to 1 is counted in each case.

Technical Address

Technical address An Excel 500/600 controller consists of 16 Distributed input/output modules with a total of 128 physical inputs and outputs. The Excel 100C provides 36 physical I/Os (see Excel 100C Installation Instructions, form no. EN1R-0144GE51, for technical addresses). Where a system requires additional inputs and outputs, several con- trollers can be connected together. Controllers then communicate with one another via the system bus.

Each physical datapoint within the system must have an address that identifies the point uniquely. The technical address contains information about the controller number, the I/O module number, and also the input/output number in this module (see Fig. 19).

020401

Mapped points (V2.04.xx or higher)

Input/output number

Module number (set via address switch on each I/O module) Controller number (set via MMI)

Fig. 19. Example of a technical address

Thus, the address 02.04.01 uniquely identifies the first input/output in the fourth module of the second controller in your system.

NOTE: The Excel 50 controller does not have I/O modules, but its technical addresses follow the same pattern, with module numbers referring to internal I/O boards. For details, see the Excel 50 Installation Instructions.

Datapoints that are mapped only to LONWORKS network variables are not assigned to any I/O board. In this case, the board number (module number) of the technical address is zero.

Trend Logging

Up to 20 datapoints (all datapoint types, except for global datapoints) in each controller can be trend logged simultaneously. This means changes in the input or output value can be stored with the user address, value (or status), date, and time for 20 different datapoints. This is achieved by selecting the attribute "Trend Logging" to YES in the datapoint description.

For analog values (see Fig. 20), the value, e.g., 20 °C / 68 °F, is displayed in addition to the user address, date, and time. For digital values (see Fig. 21), the status text, e.g., "On", is displayed in addition to the user address, date, and time.

EN2B-0092GE51 R0512 34